The <b>Plot Driver</b> is the sub system used for creating plots. 
<dl>
<dt><b>PLPLOT:</b>
<dd>This is the default system. All the other options regarding plotting are sub options which are only relevant when you are using this.
<dt><b>TEXT:</b>
<dd>This will not produce any plots, just textfiles which can be used for plotting with your favorite plotting program. This is particularly relevant if you have some special requirements to the plots.
</dl>
